Carpet sweeper



Oct. 1927.

18 T. DICKINSON CARPET SWEEPER Filed Dec. 12, 1925 G IVNVENTOR @23 491% Patented a. 18, 1927.

UNITED STATES PATENT OFFICE.

TOM DICKINSON, OF ACCRINGTON, ENGLAND, ASSIGITOR T0 ENT'WISLE &- KENYON LIMITED, 0]? AGCRINGTON, ENGLAND.

CARPET swnnrnn.

Application filed December 12, 1925, Serial No. 75,104, and in Great Britain April 30, 1925.

This invention relates to carpet sweepers in which the axles upon which the wheels rotate project through holes in the ends of the sweeper case.

The axles are carried or supported on springs to permit the user by pressure upon the handle to adjust the position of the brush in the machine in relation to the carpet or surface under operation and to maintain the wheels in contact with the peripheries of the brush pulleys.

Consequent on this movement of the axles the holes in the ends of the case through which they project are of relatively large diameter to permit same. lVe find that in use these holes become filled with dust and fiufi from the interior, retarding or obstructino the free movement of the axles and require frequent clearing or the flufl becomes jammed in the holes preventing the desired movement of the axles and the sweeper from performing its work efliciently.

According to the invention, covers of a flexible or elastic material are fitted over the axle holes, attached to the axle and to the inside of the case, which, while allowing free movement to the axle will prevent loose flufl' and dirt from entering the holes from the interior. j e

0 The invention will be described with reference to the accompanying drawings.

Fig. 1 is a transverse section of sweeper. Fig. 2 is a sectional plan of same. Fig. 3 is a front elevation of cover. Fig. 4. is a section of same enlarged showing the cover in position on the sweeper.

The sweeper is of ordinary construction with casin or box A, brush B, wheels C,

' axles c an springs C carrying the axles 0 and holes 0 in the ends of the case through which the axles 0 project from the inside to the outside of the casing A.

A cover D of flexible or elastic material is fitted over each of the holes 0 preferably in a recess a on the inside of the wall of the casing and through it the axle passes, the cover being so constructed as to allow free movement to the axle and at the same time prevent loose fluff or dirt passing into or through the holes from the interior.

The cover D comprises a flexible or elastic disc (Z of canvas, thin sheet rubber or other suitable fabric or flexible material with a central hole provided with an eyelet or rim d of metal or other suitable material to fit closely around the axle c. The outer edge of the disc d is stiflened or strengthened with a ring d of metal or other suitable material. The diameter of the disc d of flexible material is greater than the diameter of the ring (Z so that the flexible material will be loose between the rim d and the ring d2 and thus permit of a floating eccen trio movement of the central rim or eyelet d in relation to or within the ring The axle 0 passes through the central hole or eyelet 6Z1 of the flexible cover D, the flexible cover being affixed to the inside of the casing A in a recess a by pegs or screws d" through the ring (i lVhen fixed in position the centre eyelet d 01' hole is in alignment with the outer ring 01 and the intervening flexible material (1 is slack allowing freedom to the axle for its adjusting movement.

What I claim as m invention and desire to protect by Letters Patent is A carpet sweeper of the type referred to having a casing with an end wall, a supporting wheel and an axle of small diameter upon which the wheel rotates, passing through a large hole in said wall, a disc of flexible material formed with a hole in the centre fitted around the axle and through which the axle extends and a supporting ring of stifl material, formed with an aperture substantially larger than the axle and through which the axle extends, around the outer edge of the flexible disc and affixed to the interior sidev of the end wall of the sweeper case, the diameter of the disc being greater than that of the supporting ring to permit of an eccentric movement of the centre hole in relation to the edge of the flexible disc.

In testimony whereof I have hereunto set my hand.

TOM DICKINSON. 

